[App_rpt-users] Chicken Burst tweak

[Ken]

What you are talking about is in usbradio.conf

 

txtoctype=notone     ; Transmit tone control type: no,phase,notone

                     ; no - CTCSS tone encoding with no hang time

                     ; phase - encode CTCSS and reverse phase 

                     ; AKA ("reverse burst") before unkeying TX

                     ; notone - encode CTCSS and stop sending tone before
unkeying TX

                     ; AKA ("chicken burst")

 

I use the "notone" option as you can see. 

 

I find that my Kenwood radio needs about 700 ms of hang time (from rpt.conf)
for the CTCSS squelch to close.

If you drop the carrier after that, there is no noise. Before that - and you
still  hear some squelch tail.

 

Ken

KE2N

 

 

From: app_rpt-users-bounces at ohnosec.org
[mailto:app_rpt-users-bounces at ohnosec.org] On Behalf Of Lu Vencl
Sent: Wednesday, July 13, 2011 11:25 AM
To: bdboyle at bdboyle.com; app_rpt-users at ohnosec.org
Subject: Re: [App_rpt-users] Chicken Burst tweak

 

Hi Bryan.

Thanks for the reply.

Yes, I adjusted hangtime and all it does is extend the repeater hang time.

As for the reverse burst method,  it works great with radios that support is
like Motorola portables.

The problem is that the VX5-R does not support reverse burst.  The repeater
is a Motorola repeater, so I pulled the TX PL reed out and got excited about
the chicken burst option on the APP_RPT.. But it still gives me squelch
burst.. Like I said, I just need another 100 MS (200 to be safe) to make
this work..

Is this a parameter that cannot be tweaked?

If not, I can always build an external piece of hardware to add the
additional delay on the PTT. I just thought it might be easier to do this in
software.

Or I can simply wait for a future APP_RPT release that might have this
variable defined to help those with radios that need a little bit more time
in the CTCSS timeout sequence.

 

73

Lu, KA4EPS

From: app_rpt-users-bounces at ohnosec.org
[mailto:app_rpt-users-bounces at ohnosec.org] On Behalf Of Bryan D. Boyle
Sent: Wednesday, July 13, 2011 8:12 AM
To: app_rpt-users at ohnosec.org
Subject: Re: [App_rpt-users] Chicken Burst tweak

 

On 7/13/11 7:02 AM, Lu Vencl wrote: 

Looking for the parameter and file (if not in rpt.conf) where I can tweak
the length of chicken burst. The current amount is not enough for my VX 5R..
I need another 200 MS to be effective.  

Thanks..

Lu

KA4EPS

Have you gone through and set your timeouts and such in rpt.conf?
Additionally...are you transmitting PL tones?  If you are, and you're not
depending on the radio hardware (ie you're doing all the audio processing in
Asterisk, and doing direct FM injection), you can try using reversing the
phase of the pl before carrier drop to quiet the end user receiver before
dropping RF carrier.  Old technique to quiet the receiver before dropping
carrier.

Getting all of these to work correctly is a balancing act between what the
radio can do, and how that coincides with how Asterisk views the world.  

Just some thoughts.

73 Bryan WB0YLE
Allstar 27294 27295 27673 27710 27774...:)

-- Bryan In this world, you must be oh so smart or oh so pleasant. Well, for
years I was smart. I recommend pleasant. You may quote me. 

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